Apparatus for shaping sheet metal



July 1, 1930. Q J, GROEHN ETv AL 1,769,570

APPARATUS FOR SHAPING SHEET METAL A i Original Filed Dec. 28, 1927Jkvenzars:

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UNITED" is? o'rro'a. enonnn, or Gnosss rom'rn PARK, nn LA'wREnoE s. LAB; or eRossE j 1POINTE,.1VIICHIGAN, ASSIGNORS T0 HUDSON mo roaonnCOMPANY, orns'rnorr," mrcnreama CORPORATION OF'MIGHIGAN r Y 1 APPARATUSson s APiNG sneer MnrAL Original application.- filed December as, 1927,Serial n6. 243,q'3 '1 aaam. 1,708,615, dated-April 15,

1929. Divided and/this application filed February "8,1929. Seria1'No.338,4 68.

, shaping sheet metal and more particularly stood from the followingdescription in conjunction with the accompanying drawmgs:

tion of the same;

to apparatus for shaping a strip of sheet metal to polygonal form so asto bring th free ends of the strip together.

This application is a division of our copending application, Serial No.243,030, filed December 28, 1927,; Patent No. 1,708,615, dated April 9,1929, which discloses a method of shaping sheet metal to produce aquarter window finish molding for an automobile body.

It is thevobject of the present invention to provide an apparatus ofsimpleconstruction in which a strip of sheet metal-may be shapedeasily'to polygonal form so as to bring the free ends ofthe striptogether.

The invention will be more clearly. underin which, I l

Fig. 1is a plan view of an apparatus embodying the invention,

Fig. 2 is a detall vlew of a detachable por- Figs. Sand 4 are thepermanently and detachably mounted devices respectively for shaping theblank around the supports for defining the vertices of the polygon; and-Fig.- 5 is'a plan view of the blank las.

shaped with the apparatus.

' Before explaining in d ta 1 the present nvention, it is to beunderstood that the 1nvention is not limitedin' its application to.

the details of construction and arrangement 7 of parts illustrated inthe accompanying drawings, since the invention iscapable of otherembodiments and of being practiced or pended as considered in view ofthe prior H art and the requirements thereof.

One form of apparatus embodying the invention and which is adaptedparticularly fragmentary "elevational' views of portions of theapparatus showing .the vertices of the polygon.

forfshaping 'a stripjof sheet metal to polygonal f form of a 'windowopening is are pivotally mounted, and which are posishown in the.drawings and'comprisesa table; 15' having pins 16' mountedthereinjjupbnffl which'suitable supports 17, such as 011's,

tioned to define two adjacent vertices of the polygon. 'Inthe form'illus'trated' 'the rolls 17 are mounted, upon the pins 16 between alever 118,.piv0tally mounted upon the pins,

brackets, 19 extending from near the top of .thepins 16 to the table andsecured to the and shape the same against the corresponding support orroll 17.

The supports defining the other vertices of the polygon may convenientlybe in; the form of rolls 25 pivotally mounted upon pins 26 mounted inplates 27 which are se-' cured to the top surface of the table'in any.suitable-manner, as by bolts 28. A detachable manually operated device,such asQa lever 2.9,is provided with a notch 14 forde- '16 adjacent thetop surfaceo'fithe table, and

tachably and pivotally connecting the lever to the pins 26. The levers29 are provided with studs 30 carrying rolls 31 positioned to engage thebody of the strip of sheet metal and shape the same about the rolls 26.In orderthat the strip of sheet metalmay be elevated to a suitableposition relative to the rolls 17 and 25, the table is provided withsuitable upwardly extending projections 32 which engage and support thestrip of sheet metal between the supports or rolls defining In shapingthe strip of sheet metal'the outer surface of the body of the sheetmetal adjacent the central flanges is positioned to extend between andagainst the rolls 17 and with rolls 21 against the inner surface of thebody of the sheet metal. The strip of sheet metal is then bent manuallyatright angles around each of the rolls 17 and thereafter the levers 18are manually operated in the direction of the arrows (Fig. 1) to bring Ithe rolls 21 against the body of the strip of- F F-meta 1 each rolls 17.The"stripjofisheetflmetal is then 1 v I bent, at right angles; aroundeach oflthe f 1011s; 251m bringfthej we ends" td'gefher. l Th levers 29th'nf'm'bunted upon the pins r-i memhwhich-th mw sliaped'mrounduvtherolls" 2 25 by'tumingthe.leyersf29fi11 the direction 1010 the arrows-(1?i H

